Patents by Inventor Masaki Nishizawa

Masaki Nishizawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • MPEG image decoding apparatus and method for switching operation of searching for specific code in bit stream
    Patent number: 6778609
    Abstract: An MPEG image decoding apparatus and method is disclosed, by which normal images can be supplied even if a bit stream is a nonstandardized bit stream having an error.
    Type: Grant
    Filed: February 9, 2001
    Date of Patent: August 17, 2004
    Assignee: NEC Electronics Corporation
    Inventors: Masaki Nishizawa, Mitsuhiro Ishii
  • MPEG image decoding apparatus and method for switching operation of searching for specific code in bit stream
    Publication number: 20010014126
    Abstract: An MPEG image decoding apparatus and method is disclosed, by which normal images can be supplied even if a bit stream is a nonstandardized bit stream having an error.
    Type: Application
    Filed: February 9, 2001
    Publication date: August 16, 2001
    Applicant: NEC CORPORATION
    Inventors: Masaki Nishizawa, Mitsuhiro Ishii
  • Air/fuel ratio control system for internal combustion engine
    Patent number: 5095878
    Abstract: An air/fuel ratio control system is provided for use with an internal combustion engine. The system includes a first air/fuel ratio detector arranged on an upstream side of a catalytic converter so as to detect the air/fuel ratio of the engine from components of exhaust gas, a second air/fuel ratio detector arranged in the exhaust system and having a detection response speed slower than the first air/fuel ratio detector, a device for controlling the air/fuel ratio of the engine on the basis of results of a comparison between a detection value from the first air/fuel ratio detector and a predetermined first reference value, a device for effecting a correction to the control of the air/fuel ratio by the air/fuel ratio control device on the basis of results of a comparison between a detection value from the second air/fuel ratio detector and a predetermined second reference value, and a device for shifting the second reference value to a lean air/fuel ratio side in a specific operation state of the engine.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: March 17, 1992
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shiro Kumagai, Katsuo Akishino, Reijiro Komagome, Michiyasu Yoshida, Tateo Kume, Masaki Nishizawa, Seiji Ishida, Takehisa Fujita
  • Air/fuel ratio control system for an internal combustion engine
    Patent number: 5077971
    Abstract: An air/fuel ratio control system is provided for use with an internal combustion engine. The system includes an air/fuel ratio detector arranged on an upstream side of a catalytic converter so as to detect the air/fuel ratio of the internal combustion engine from components of exhaust gas, a device for controlling the air/fuel ratio of the internal combustion engine on the basis of results of a comparison between a detection value from the air/fuel ratio detector and a predetermined reference value; and a device for shifting the reference value to a lean air/fuel ratio side in a specific operation state of the internal combustion engine.
    Type: Grant
    Filed: June 27, 1990
    Date of Patent: January 7, 1992
    Assignee: Mitsubishi Jidosha Kogyo Kabushiki Kaisha
    Inventors: Shiro Kumagai, Katsuo Akishino, Reijiro Komagome, Michiyasu Yoshida, Tateo Kume, Masaki Nishizawa, Seiji Ishida, Takehisa Fujita